CN216988639U - Positive pressure circulating airflow screening equipment - Google Patents

Abstract

The utility model discloses positive pressure circulating airflow screening equipment, which relates to the technical field of airflow screening and comprises a supporting plate, wherein the upper surface of the supporting plate is fixedly connected with a supporting leg, the upper surface of the supporting leg is fixedly connected with a blanking box, a discharge hole of the blanking box is fixedly connected with a conveying channel, one end of the conveying channel is fixedly connected with a screening channel, the outer surface of one end of the screening channel is provided with a Roots blower, a screen is arranged inside the screening channel, the lower surface of the screening channel is fixedly connected with a slag pipe, the lower surface of the slag pipe is provided with a slag discharge valve, one side of the lower part of the slag pipe is provided with a blower, the other side of the lower part of the slag pipe is fixedly connected with a circulating pipeline, the other end of the circulating pipeline is fixedly connected with the screening channel, and the other end of the screening channel is provided with a bin. Through the setting of fan and circulating line, reach the extravagant purpose of improvement reduction material.

Description

Positive pressure circulating airflow screening equipment

Technical Field

The utility model relates to the technical field of airflow screening, in particular to positive-pressure circulating airflow screening equipment.

Background

The pneumatic conveying method has become the mainstream method of powder conveying. The pneumatic conveying is divided into negative pressure conveying and positive pressure conveying, the positive pressure conveying is a very common and preferred powder conveying mode used in food factories due to the advantages of high concentration ratio of material gas, high conveying efficiency, small gas consumption, flexible line switching, multipoint discharging and the like by using a two-way valve, the positive pressure conveying pressure is usually within the range of 0.2-3kpa of atmospheric pressure, and no powder is left in a conveying pipeline, so that the food sanitation is fundamentally ensured.

At present, current air current screening equipment, when carrying out operations such as grading, dust removal to the material, often can be because the screen cloth blocks up, influence the process of work, and then reduce work efficiency, current net cleaning device structure is more complicated, although can be better place the screen cloth and block up, but the clearance is got up comparatively complicatedly, and current air current screening equipment, after screening the material, can contain the fractional part material in the material sediment of screening out, lead to the waste of material, so current air current screening device exists the screen cloth and easily blocks up and sieve insufficient shortcoming.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides positive pressure circulating airflow screening equipment, which solves the problems in the background art.

(II) technical scheme

In order to realize the purpose, the utility model is realized by the following technical scheme: the utility model provides a malleation circulation air current screening equipment, includes the backup pad, the last fixed surface of backup pad is connected with the supporting leg, the last fixed surface of supporting leg is connected with the workbin, the upper surface of workbin articulates there is sealed lid, the discharge gate fixedly connected with conveying passageway of workbin, the one end fixedly connected with screening passageway of conveying passageway, the surface mounting of screening passageway one end has roots's fan, the internally mounted of screening passageway has the screen cloth, the lower fixed surface of screening passageway is connected with the material sediment pipe, the lower surface mounting of material sediment pipe has the slag valve, the fan is installed to one side of material sediment pipe lower part, the opposite side fixedly connected with circulating line of material sediment pipe lower part, the other end fixedly connected with screening passageway of circulating line, the other end of screening passageway is provided with the feed bin.

Optionally, the motor is installed to transfer passage's one end, the outer wall fixedly connected with pivot that transfer passage was run through to the output of motor, the surface mounting of pivot has the spiral leaf, transfer passage's one end communicates with each other with the screening passageway.

Optionally, a slag hole is formed in the lower surface of the screening channel, the screening channel is communicated with a slag pipe through the slag hole, a first circulation hole is formed in the surface of the slag pipe, the slag pipe is communicated with a circulation pipeline through the first circulation hole, a second circulation hole is formed in the surface of the screening channel, and the screening channel is communicated with the circulation pipeline through the second circulation hole.

Optionally, the material residue port is located right below the left side of the screen, and the blowing direction of the fan is opposite to the first circulation port.

Optionally, the positive center fixedly connected with bearing of screen cloth left side surface, the surface rotation of bearing is connected with the axis of rotation, the fixed surface of axis of rotation is connected with the rotation flabellum, the lower surface mounting who rotates the flabellum has the brush, the quantity that rotates flabellum and brush is two and symmetric distribution in the both sides of axis of rotation.

Optionally, the steam inlet temperature of the conveying medium of the roots blower is not greater than forty degrees centigrade, and the use pressure is not greater than the pressure boosting range specified on the nameplate of the roots blower.

(III) advantageous effects

The utility model provides positive pressure circulating airflow screening equipment which has the following beneficial effects:

1. this air current screening equipment through the setting of rotating flabellum and brush, makes this air current screening equipment possess the effect of clean screen cloth, and in the use, the wind that the roots's fan blew out blows to rotating the flabellum, makes and rotates the flabellum and rotate for the screen cloth through bearing and axis of rotation, and then sweeps away the material sediment that is in the screen cloth surface through the brush, and then has reached the purpose that prevents the screen cloth jam.

2. This air current screening equipment, through fan and circulating line's setting, make this air current screening equipment possess and carried out the effect that the secondary was sieved to the material sediment of sieving out, at the in-process of screening, the material of fluidization is when the screen cloth, a little material can fall into in the material sediment pipe along with the material sediment, will fall into in the material sediment pipe through the fan and blow to the circulating line with the material sediment, get back to the screening passageway by the second circulation mouth again in, the effect of secondary screening has been played, reached and improved the extravagant purpose of reduction material.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view of a front section of the blanking box of the present invention;

FIG. 3 is a schematic perspective view of the screening apparatus of the present invention;

FIG. 4 is a schematic structural view in elevation of a cross section of the screening apparatus of the present invention;

fig. 5 is a schematic three-dimensional structure diagram of the screening device of the present invention.

In the figure: 1. a support plate; 2. supporting legs; 3. a blanking box; 4. a sealing cover; 5. a transfer channel; 6. a motor; 7. a rotating shaft; 8. helical leaves; 9. a screening channel; 10. a Roots blower; 11. screening a screen; 12. a bearing; 13. a rotating shaft; 14. rotating the fan blades; 15. a brush; 16. a slag hole; 17. a slag pipe; 18. a fan; 19. a slag discharge valve; 20. a first circulation port; 21. a circulation pipe; 22. a second circulation port; 23. a storage bin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 5, the present invention provides a technical solution: a positive pressure circulating airflow screening device comprises a supporting plate 1, supporting legs 2 are fixedly connected to the upper surface of the supporting plate 1, a blanking box 3 is fixedly connected to the upper surface of each supporting leg 2, a sealing cover 4 is hinged to the upper surface of each blanking box 3, a conveying channel 5 is fixedly connected to a discharge port of each blanking box 3, a motor 6 is installed at one end of each conveying channel 5, a rotating shaft 7 is fixedly connected to the output end of each motor 6, which penetrates through the outer wall of each conveying channel 5, a spiral blade 8 is installed on the surface of each rotating shaft 7, one end of each conveying channel 5 is communicated with a screening channel 9, one end of each conveying channel 5 is fixedly connected with a screening channel 9, a Roots blower 10 is installed on the outer surface of one end of each screening channel 9, the steam inlet temperature of a conveying medium of the Roots blower 10 is not higher than forty ℃ and the use pressure is not higher than the boosting range specified on a nameplate of the Roots blower 10, and a screen 11 is installed inside the screening channel 9, the slag hole 16 is positioned right below the left side of the screen mesh 11, the blowing direction of the fan 18 is opposite to the first circulation hole 20, the bearing 12 is fixedly connected with the center of the left side surface of the screen mesh 11, the surface of the bearing 12 is rotatably connected with the rotating shaft 13, the surface of the rotating shaft 13 is fixedly connected with the rotating fan blade 14, the lower surface of the rotating fan blade 14 is provided with the brush 15, the number of the rotating fan blade 14 and the number of the brush 15 are two, the rotating fan blade 14 and the brush 15 are symmetrically distributed at the two sides of the rotating shaft 13, the lower surface of the screening channel 9 is fixedly connected with the slag pipe 17, the lower surface of the slag pipe 17 is provided with the slag discharge valve 19, one side of the lower part of the slag pipe 17 is provided with the fan 18, the other side of the lower part of the slag pipe 17 is fixedly connected with the circulation pipeline 21, the other end of the circulation pipeline 21 is fixedly connected with the screening channel 9, the lower surface of the screening channel 9 is provided with the slag hole 16, the screening channel 9 is communicated with the slag pipe 17 through the slag hole 16, the surface of the slag pipe 17 is provided with a first circulation port 20, the slag pipe 17 is communicated with a circulation pipeline 21 through the first circulation port 20, the surface of the screening channel 9 is provided with a second circulation port 22, the screening channel 9 is communicated with the circulation pipeline 21 through the second circulation port 22, and the other end of the screening channel 9 is provided with a bin 23.

When the material screening device is used, materials are poured into the blanking box 3, the sealing cover 4 is covered, the motor 6 is opened at the moment, the motor 6 drives the rotating shaft 7 to rotate, the spiral blade 8 rotates, the materials in the blanking box 3 are conveyed into the screening channel 9, the Roots blower 10 starts to work while conveying the materials, the materials entering the screening channel 9 are blown to the screen 11, the materials entering the screening channel 9 are in a fluidized state under the action of the Roots blower 10, the fluidized materials are discharged through the screen 11 along with air flow, the mixture of the materials and the material slag which are not discharged falls into the material slag pipe 17 through the material slag hole 16, the mixture falling into the material slag pipe 17 blows the mixture into the circulating pipeline 21 under the action of the fan 18, the mixture enters the screening channel 9 again through the circulating pipeline 21, the mixture is screened again along with the air flow, and under the action of the air flow in the screening process, rotating fan blade 14 sets up through the cooperation of bearing 12 and axis of rotation 13 down, and brush 15 rotates on screen cloth 11's surface, and then will adhere to the material sediment on screen cloth 11 surface and clean, has reached the purpose that prevents to block up screen cloth 11, and the screening is accomplished the back, and the material gets into feed bin 23 in, closes fan 18, and the material sediment falls in material sediment pipe 17, through opening slag discharge valve 19, will expect the sediment and take out can.

The working principle and the beneficial effects of the utility model are as follows: the airflow screening equipment has the effect of cleaning the screen 11 by arranging the rotating fan blades 14 and the brush 15, in the using process, the wind blown out by the Roots blower 10 is blown to the rotating fan blades 14, the rotating fan blades 14 rotate relative to the screen 11 through the bearing 12 and the rotating shaft 13, then the material slag on the surface of the screen 11 is swept away by the brush 15, the purpose of preventing the screen 11 from being blocked is further achieved, through the arrangement of the fan 18 and the circulating pipeline 21, the airflow screening equipment has the effect of secondarily screening the screened material slag, in the screening process, when fluidized materials pass through the screen 11, a small amount of materials can fall into the material slag pipe 17 along with the material slag, the materials and the material slag falling into the material slag pipe 17 are blown into the circulating pipeline 21 through the fan 18 and then return to the screening channel 9 through the second circulating port 22, the secondary screening effect is achieved, the purpose of reducing material waste is achieved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (6)

1. A positive pressure circulating airflow screening apparatus comprising a support plate (1), characterized in that: the utility model discloses a material screening device, including backup pad (1), last fixed surface of backup pad (1) is connected with supporting leg (2), the last fixed surface of supporting leg (2) is connected with workbin (3), the upper surface of workbin (3) articulates there is sealed lid (4), the discharge gate fixedly connected with transfer passage (5) of workbin (3), the one end fixedly connected with screening passageway (9) of transfer passage (5), the surface mounting of screening passageway (9) one end has roots's fan (10), the internally mounted of screening passageway (9) has screen cloth (11), the lower fixed surface of screening passageway (9) is connected with slag pipe (17), the lower surface mounting of slag pipe (17) has slag discharge valve (19), fan (18) are installed to one side of slag pipe (17) lower part, opposite side fixedly connected with circulating line (21) of slag pipe (17) lower part, the other end fixedly connected with screening passageway (9) of circulating line (21), the other end of screening passageway (9) is provided with feed bin (23).

2. The positive pressure circulating gas stream screening apparatus of claim 1, wherein: motor (6) are installed to the one end of transfer passage (5), outer wall fixedly connected with pivot (7) that transfer passage (5) were run through to the output of motor (6), the surface mounting of pivot (7) has spiral leaf (8), the one end of transfer passage (5) communicates with each other with screening passageway (9).

3. The positive pressure circulating gas stream screening apparatus of claim 1, wherein: slag hole (16) have been seted up to the lower surface of screening passageway (9), screening passageway (9) communicates with each other through slag hole (16) and slag pipe (17), first circulation mouth (20) have been seted up on the surface of slag pipe (17), slag pipe (17) communicate with each other with circulating line (21) through first circulation mouth (20), second circulation mouth (22) have been seted up on the surface of screening passageway (9), screening passageway (9) communicate with each other with circulating line (21) through second circulation mouth (22).

4. The positive pressure circulating gas stream screening apparatus of claim 3, wherein: the slag hole (16) is located right below the left side of the screen (11), and the blowing direction of the fan (18) is opposite to the first circulation hole (20).

5. The positive pressure circulating gas stream screening apparatus of claim 1, wherein: the positive center fixedly connected with bearing (12) of screen cloth (11) left side surface, the surface rotation of bearing (12) is connected with axis of rotation (13), the fixed surface of axis of rotation (13) is connected with rotates flabellum (14), the lower surface mounting who rotates flabellum (14) has brush (15), the quantity of rotating flabellum (14) and brush (15) is two and the both sides of symmetric distribution in axis of rotation (13).

6. A positive pressure circulating gas stream screening apparatus as claimed in claim 1, wherein: the steam inlet temperature of the medium conveyed by the Roots blower (10) is not more than forty ℃, and the use pressure is not more than the specified pressure-boosting range on the nameplate of the Roots blower (10).

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